Commit 7228113d authored by Juergen Gross's avatar Juergen Gross
Browse files

xen/virtio: use dom0 as default backend for CONFIG_XEN_VIRTIO_FORCE_GRANT 



With CONFIG_XEN_VIRTIO_FORCE_GRANT set the default backend domid to 0,
enabling to use xen_grant_dma_ops for those devices.

Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
Reviewed-by: default avatarOleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Acked-by: default avatarStefano Stabellini <sstabellini@kernel.org>
Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
parent c9133112

drivers/xen/grant-dma-ops.c

+3 −0
Original line number Diff line number Diff line
@@ -365,6 +365,9 @@ void xen_grant_setup_dma_ops(struct device *dev) 
	if (dev->of_node) {

		if (xen_dt_grant_init_backend_domid(dev, data))

			goto err;

	} else if (IS_ENABLED(CONFIG_XEN_VIRTIO_FORCE_GRANT)) {

		dev_info(dev, "Using dom0 as backend\n");

		data->backend_domid = 0;

	} else {

		/* XXX ACPI device unsupported for now */

		goto err;